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Effects of coronary artery revascularization and perioperative myocardial infarction on left ventricular wall motion.

Abstract：

:The effects of coronary artery revascularization and perioperative myocardial infarction on left ventricular wall motion are still controversial. In this study perioperative myocardial infarction was quantitatively estimated with the cumulative activity of the CK-MB isoenzyme in the perioperative period in a group of 77 consecutive patients undergoing coronary artery bypass surgery. After the operation (on average 9 +/- 1.8 months) all the patients were submitted to left ventricular and coronary angiography. Overall the global left ventricular ejection fraction was unchanged after the operation. The subgroup of patients with all patent grafts showed an improvement of both regional wall motion (P less than 0.05) and ejection fraction (from 58 +/- 13 to 64 +/- 13%, P less than 0.005); the number of angiographically abnormal left ventricular segments decreased from 28.5 to 16.6% (P less than 0.001). The cumulative activity of CK-MB enzyme was significantly correlated with the pre- and postoperative changes of ejection fraction (r = -0.51, P less than 0.01). Thus coronary artery bypass surgery can improve regional wall motion, but the likely benefit is observed in the absence of a perioperative myocardial ischemic damage.

journal_name

Int J Cardiol

journal_title

International journal of cardiology

authors

Melandri G,Maresta A,Contrafatto I,Tartagni F,Magnani B

doi

10.1016/0167-5273(87)90291-9

subject

Has Abstract

pub_date

1987-04-01 00:00:00

pages

47-54

issue

1

eissn

0167-5273

issn

1874-1754

pii

0167-5273(87)90291-9

journal_volume

15

pub_type

杂志文章

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